<template>
    <div>
        <div class="search">
            <input class="search-box" type="text" v-model="keyword" placeholder="输入城市名字或拼音">
        </div>
        <div class="search-content" ref="searchs" v-show="keyword">
            <ul>
                <li class= "seach-item border-bottom"
                    v-for="item of list" 
                    :key="item.id" 
                    @click= "handleCityClick(item.name)">{{item.name}}</li>
                <li class= "seach-item border-bottom" 
                    v-show="hasNoData">没有</li>
            </ul>
        </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll' 
import { mapMutations } from 'vuex'
export default {
    name: 'CitySearch',
    props: {
        cities: Object
    },
    data () {
        return {
            keyword:'',
            list: [],
            timer: null
        }
    },
    computed: {
        hasNoData(){
            return !this.list.length
        }
    },
    watch: {
        keyword () {
            let that = this
            if(this.timer) {
                clearTimeout(this.timer)
            }
            if(!this.keyword ){
                this.list = []
                return
            }
            this.timer = setTimeout(() => {
                const result = []
                for(let i in this.cities){
                    that.cities[i].forEach((value) => {
                        if(value.spell.indexOf(that.keyword) > -1 || value.name.indexOf(that.keyword) > -1){
                            result.push(value)
                        }
                    });
                }
                this.list = result
            },100)
        }
    },
     methods: {
        handleCityClick (city) {
            // alert(city)
            // this.$store.dispatch('changeCity',city)
            //  this.$store.commit('changeCity',city)
            this.changeCity(city)
             //页面跳转
             this.$router.push('/')
        },
        ...mapMutations({
            changeCity:'changeCity'
        })
    },
    mounted (){
        this.scroll = new Bscroll(this.$refs.searchs)
    }
}
</script>

<style lang="stylus" scoped>    
    @import '~styles/varibles.styl'
    .search
        height: 0.72rem
        padding: 0 .1rem
        background: $bgColor
        .search-box
            box-sizing: border-box
            width: 100%
            height: 0.62rem
            padding: 0 .1rem
            line-height: .62rem
            border-radius: .05rem
    .search-content
        position: absolute
        top: 1.58rem
        overflow: hidden
        left: 0
        right: 0
        bottom: 0
        z-index: 1
        background: #eeeeee
        .seach-item
            line-height: .62rem
            padding-left: .2rem
            background:#fff

</style>